Expansion-comb for warping



(No Model.)

T. O. ENTWISTLE.

EXPANSION 00MB FOR WARPING, BEAMING, AND OTHER MACHINES. No. 343,801.Patented. June 1-5, 1886.

UNITED 1 ATET ribe,

THOMAS C. ENT'WISTLE, OF LOWELL, MASSACHUSETTS.

EXPANSION-COMB FOR WARPING, BEAM|NG, AND OTHER MACHINES.

SPECIFICATION forming part of Letters Patent No. 34:3,801, dated Tune15, 1886.

Application filed February 1, 1886. Serial No. 190,468. (No model.)

number of its parts, and to provide means of allowing the dirt and lintwhich ordinarily accumulates in a combbox to escape therefrom.

in the accompanying drawings, Figure 1 is an isometric view of myimproved expansioncomb; Fig.2,a central Vertical longitudinal sec tionof the same; Fig. 3, a vertical crosssection of the same on the line ora: in Fig. 2; Fig. 4, a

central vertical longitudinal section through the comb-box and bracketsof a modified form of the same, the modification relating to the meansby which the comb is expanded, and the other parts being shown inelevation; Fig. 5, a vertical cross-section on the line y y in Fig. 4.

The comb hereinafter described is supported on the frame of the warping0r beaming machine in any usual manner, and is adapted to be used withany warping or beaming machine in which an expansion-comb is used.

The ordinary expansion'comb consists of a series of dents arrangedvertically between the coils of one or two pairs of springs, and pro-'jecting upward through a longitudinal slot in the upper part of thecomb-box within which such springs and the lower parts of such dents areinclosed, and guide-rods which extend within said springs from end toend of the same on opposite sides of said dents to hold said springs anddents in their proper positions relative to each other, and a stop-rodwhich extends from end to end of the box through holes in the lower partof said dents to prevent said dentsbeing drawn out of said springs andcomb-box. These guide-rods and the stop-rod frequently interfere withthe expansion and contraction of the springs in certain parts thereof,and sometimes cause a permanent set or extension in the springs at somepoint, thus making the springs useless. The

comb-box as usually constructed is liable to grooved or hollowed out atB on its upper sur-' face nearly from end to end thereof, and slottedentirely through at B from the bottom of said groove B to the bottom ofsaid bar, and almost from end to end of said groove. A spiral spring, 0,is laid in said groove and projects therefrom for more than half of itsdiameter. The spring 0 is prevented from rising out of the groove by arod, E,which runs through said spring just out of contact therewith atthe bottom of the same, and is secured at its ends by screws 6 c whichpass through eyes 6 in the ends of said rod. The ends of the spring arebent into hooks c c, which engage loops h It, secured to the ends ofmetallic ribbonsH H, one at each end of the box, which ribbons arewoundupon drums I I, supported horizontally in heads or brackets K K, securedto the ends of said bar or comb-box and turned by means of hand-wheels JJ, secured to said drums, said drums being prevented from beingaccidentally turned by the friction thereon of said brackets, which areprovided with horizontal slits k and with screws S S, which turn in saidbrackets vertically to contract said slits and to close the parts ofsaid brackets above and below said slits upon said drums. The bracketsare secured to the ends of the box or bar by screws.

The devices above named for expanding the spring are s'ubstan tiall yshown and described in Patent No. 383,399.

It will be seen that the coils of the springs being exposed above thetop of the bar or box serve as dents, the spaces between said coilsreceiving the warp yarns just as the interdental spaces of an ordinaryexpansion-comb receive said yarns. The middle of the spring is preventedfrom moving longitudinally bya i wire, F, laid in notches f across saidbar Ain the space between two coils of said spring,said wire beingturned down over the sides of said bar, and the ends of said wire beingprovided with eyesf'f, into which screws are driven which enter the barA.

In Figs. 4 and 5another means of expanding the spring is shown, whichconsists of screws in Fig. 4., as well as the means shown in Figs.

1 and 2, permit of expanding the spring from either end independently ofthe other end.

It is evidently impossible for lint and fiyings to accumulate on the barA and between the coils of the spring to such an extent as to interferewith the expansion and contraction of said spring, because such lint andflyings will drop through the slot B.

I claim as my invention 1. The combination of astraight bar slottedthrough vertically nearly from end to end and provided in its uppersurface with a longitudinal rounded groove openinginto said verticalslot, a spring laid in said groove, a rodplaced within said spring andextending through the same and having its ends secured to said barwithin said groove beyond the ends of said slot, brackets secured to theends'of said bar provided with horizontal slits, drums turning in saidbrackets, screws turning in said brackets to contract said slits to holdsaid drums from turning, ribbons or straps secured to said drums and tothe ends of said spring, and means, substantially as described,ofpreventing the movement of the middle of said spring, as and for thepurpose specified.

2. The combination of a straight bar slotted through vertically nearlyfrom end to end and provided in its upper surface with a longitudinalrounded groove opening into said vertical slot, a spring laid in saidgroove, a rod placed within said spring and extending through the sameand having its ends secured to said bar within said groove beyond theends of said slot, brackets secured to the ends of said bar providedwith horizontal slits, drums turning in said brackets, screws turning insaid brackets to contract said slits to hold said drums from turning,ribbons or straps secured to said drums and to the ends of said spring,and a wire or rod placed between the middle coils of said spring andsecured to said bar, as and for the purpose specified.

In witness whereof I have hereunto subscribed my name this 27th day ofJanuary, A.

THOMAS C. ENTWISTLE. Witnesses:

ALBERT M. MOORE, GERTRUDE M. DAY.

